Support pillow



FIG. 1 is a top-front-right perspective view of a support pillow;

FIG. 2 is a bottom-rear-left perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a left elevational view thereof; and,

FIG. 8 is a right elevational view thereof. 

CLAIM The ornamental design for a support pillow, as shown and described. 